Injector.



No. 652,392. Patented June 26, I900. J. HUBER.

INJECTOR. Application filed May 17, 1899.) (llodaL) 2 Sheets-Sheet I.

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INJECTOR.

(Applicatian filed May 17, 1899.)

2 Sheets-Sheet 2.

(HodeL) fiavara n1: nonms PET'ERS 0o, PNGTO-LIFHOY, WASHINGTON, n. c.

UNITED STATES PATENT FFICEQ JACOB HUBER, OF BRIDGEPORT, CONNECTICUT,ASSIGNOR TO THE HAYDEN & DERBY MANUFACTURING COMPANY, OF NEIV YORK.

INJECTOR.

SPECIFICATION forming part of Letters Tatent No. 652,392, dated nine 26,1900. Applicationfiled May 17,1899. Eierial No. 717,128. (ModuL) Myinvention relates to the class of injectors known as double-tubeinjectors; and its novelty consists in the construction and adaptationof the parts, more particular reference being had to the means employedto couple the final-overflow-valve rod to the main-steam-valve stem.

The main features of the injector to which my invention is applied areshown and described in Letters Patent of the United States No. 604,233,issued to the Hayden & Derby Manufacturing Company as my assiguee May17, 1898, and I refer to such patent for a full detailed description ofthe operative parts of said injector, although it will be understoodthat my invention may be applied to and used with any other double-tubeinjector having the essential operative parts shown in the patenteddevice.

In the drawings, Figure 1 is a vertical medial section of an injectordisplaying my inthe boiler; 6, the lifting steam-nozzle; 7, the

lifting combining-tube; 8, the forcing steamnozzle, and 9 the forcingcombining-tube.

10 is the final-overflow valve. 11 is its stem. 12 is the bell-cranklever by which it is reciprocated and which is pivoted upon the casingin the usual manner, and 13 is its connecting or actuating rod. Thisconnectingrod 13 is adapted to pass through a central aperture in thecasing and is provided near its extremity with one or morelaterally-projecting lugs 14 and at its extremity with a handle 15.

1 is a center piece over which is placed a coupling 21, consisting oftwo horizontallydisposed pieces 22 and 23, adapted to be secured to themain valve-stem 18 by the crosshead 24 or by similar suitable means. Thecoupling 21 is also provided with two upwardly-extending curved arms 25and 26, which do not meet at the center, but are separated sufficientlyto permit the over flow-valve rod 13 to pass between them. Each of thesecurved arms is slotted or recessed, as at 27 and 28, to receive the lugs14 on theoverfiowvalve rod 13.

The other parts of the injector will be understood by those skilled inthe art to which it appertains and need no special description.

The operation of the injector is also easily understood. The lever 19being slightly moved, the auxiliary inlet-valve of the main steam-valveis opened. The steam then passes to the lifting-nozzle and liftingcombiningtube, thence to the inlet-chamber of the foreingcombining-tube, and thence passes in the usual way to the overflow-port. The passage of the steam through the lifting combining-tubeproduces a vacuum in. the suction-chamber above the source of thewatersupply. This causes the water to rise and join the steam, wherebythe latter is condensed, and the water then follows the usual route tothe overflow-port. Now if the lever 19 is again slightly moved thevalve-rod 13, being coupled to the lever 19, through the arms 25 and 26,the overflow-valve 10 is moved toward its seat. This retards the flow ofthe water and forces a portion of it into and through the forcingcombining-tube. The lever 19 being again moved allows the steam to flowthrough the forcing steam-nozzle and being condensed in the forcingcombining-tube drives it through this latter tube at a high velocity.This causes a high pressure to be exerted upon the valve controlling theport leading from the discharge-chamber of the lifting apparatus andforces it to its seat. A

yet further movement of the lever 19 causes the final-overflow valvefinally to be closed against its seat. This therefore forces the waterthrough the check-valve into the boiler. It will be observed that duringthis operation the overflow-valve rod 13 has been coupled to the lever19, as the lugs 14 have been placed within the slots 27 and 28 on thearms 25 and 26, and that therefore the main steam-valve and thefinal-overflow valve have been operated, by the same lever 19. It is attimes desirable, however, that the main steam-valve and thefinal-overflow-valve can be operated independently of each other,especially when it is intended to use the'ste'am to heat the water inthe feed-Water tank. This may be accomplished by lifting theoverflow-valve rod 13 out of engagement with the coupling 21 by means ofthe handle 15 and pulling the same until the overflow-valve is closed.If now the lever 19 is moved slightly to admit the steam, the latterwill pass into the injector through its various passages and into thefeed-Water tank. When such action has taken place as long as desired andit is wished to restore the parts to their connected position, thevalve-rod 13 is lifted and pushed forward until its lugs 14 coincidewith the slots 27 and 28, when they are pushed into engagement therewithand the overflow-valve rod and the main steam-valve stem are in aposition to be conjointly' operated by the lever 19.

WhatI claim as new is-- 1. In an injector, the combination with the mainsteam-valve and its stem, and the finaloverfiow Valve and its rod, of acoupling secured to the main-steam-valve stem and provided with meansfor engaging with the finaloverflow-valve rod, consisting of twoupwardly-projecting arms, each connected to a cross-head upon themain-steam-valve stem, and each slotted transversely and adapted toreceive and engage with lugs upon the overflow-valve rod.

2. In an injector, the combination with the main-steam-valve stem andthe overflow-valve connecting-rod, of a lever adapted simultaneously tooperate the valve-stem and rod, througha coupling hinged to the leverand the Valve-stem and provided with a slotted bearing adapted toreceive and engage with lugs on the rod.

3. In an injector, the combination with the main=steam-valve stem ,thefinal=overflow connecting-rod and the lever 19, of a coupling consistingof two pieces, each piece being hinged to the lever and the valve-stem,and each provided with an upwardly-projecting slotted arm, the armsbeing separated to permit of the passage of the, connecting-rod betweenthem.

In witness whereof I have hereunto set my hand, this 16th day of May,1899, in the pres ence of two subscribingmitnesses.

JACOB HUBER VVitnessesz' HERMAN MEYER, JOHN D. DERBY.

